The smallest diesels I know of is the Kubotas in 1 and 2 cylinders, from 6-13Hp. You can tuck one under your arm.
--- In electricboats@yahoogroups.com, Kevin Shepherd <shepherdkevinj@...> wrote:
>
> Seams we are waiting for the production of a micro deisel. 4 cyl. Fresh
> water cooled. Common rail injection. Bio fuel compatable. Thimble sized
> cylenders. 3hp. With 2kw perm mag gen. Comes in sound enclosure. And under
> 80 lbs.
>
> Kevin Shepherd
>
> On 2011-07-23 7:38 PM, "James Lambden" <james@...> wrote:
>
> **
>
>
> Gentlemen,
>
> In determining the suitability of a hybrid drive for a sailboat one must
> consider the duty cycle of the diesel generator.
>
> If the boat consumes small amounts of power, and the batteries are used as a
> buffer to the large output of a diesel generator, then it makes sense.
>
> If the duty cycle is 10 to 1, then hybrid is an obvious advantage, the
> batteries won't get cycled that often so they won't wear out early, and the
> diesel generator will be charging the batteries at the diesel's optimum
> efficiency.
>
> If the duty cycle is 1 to 1, then the hybrid is not advantageous at all.
>
> It all depends on how you use your boat. It is my observation that the
> way boats are used in the Santa Barbara Harbor, that Hybrid Propulsion would
> be a great advantage. Most boats use their diesels very infrequently, some
> getting a tank of gas once per year at most.
>
> One also has to consider the percentage of energy used by the house, and the
> percentage used for propulsion. With boats that use more energy for their
> house than for propulsion, once again hybrid wins because a DC generator is
> upwards of 3 times as efficient as a belt driven alternator.
>
> The final remaining factor to determine if hybrid technology is appropriate
> for someones vessel is how pleasant life on board can be. Diesel
> Generators can be mounted in a lazarette - outside the living spaces of the
> boat. And an electric motor is far nicer to live with than a diesel -
> anyday.
>
> My firm belief is that diesels make for a better motor boat, and electrics,
> be it battery electric, solar electric or diesel electric, make for better
> sailboats.
>
> Now if I can only figure out how to automate the tracker for my 450 watt
> solar array......
>
> Pictures coming soon
>
> James
>
>
>
>
>
>
> On Jul 22, 2011, at 10:27 PM, Eric wrote:
>
> >
> >
> > Hi Kerry,
> >
> > So what you're saying is that ...
>
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